Gurdon's nuclear transplantation experiments with clawed toads supports the hypothesis that:
A)differentiation is the result of genes being successively deleted from the genome.
B)differentiation is the result of genes being successively turned on or off.
C)differentiation causes cells to become pluripotent.
D)only nuclei from the blastocyst retain sufficient potency to produce an adult organism.
E)All of these choices are correct.

Question

Quizplus · Accepted Answer

Gurdon's experiments showed that the nuclei from differentiated cells of the clawed toad could be reprogrammed to express genes necessary for the development of a complete organism. This supports the hypothesis that differentiation is the result of genes being successively turned on or off, rather than being deleted from the genome.

Gurdon's Nuclear Transplantation Experiments with Clawed Toads Supports the Hypothesis